Adding-machine



2 Sheets-8216M 1.

(No Model.)

A. E. S'HATTUGK.

ADDING MACHINE.

Patented Jilne 9,1891.

(No Model.) 2 Sheets-Sheet 2.

A. E. SHATTUOK. ADDING MACHINE.

Patented June 9,1891.

retchetjoperatedfbj keys.

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To all whom it.

. Bait known that lgAmm E. semi;

' scitiienof the United States,'residing ii1 the: e

plates toplaoe; In'the rim of plateDis a city and county of S'an' Franciscq'; State of California, have-in eiited an Improvementin Adding-Machines; and I-hereby declare the following to be t full, cleer, descrip .,'My invention rel tes to the-general classof sdding mschjines, and especially-to that 'sub- 'class' in which the ringFadtuzited plate or plates aretcontrolled y-meens of 'a pawl arid;

My invention" 'onsists,-essentially;in oppo s'itely-meving plategonoj' moving-varyin g dis- "tances .and the others-"g ven distance, as a --result of which comhin'a'fiohs mayb made of V the first four digits with the fifth toobtain' f allthe digits. i w

My invention also consists in theno vel con:

. struction and arrangement of parts hereinafter fully described, and specificallyppinted out in the claimsii 'lhe generelohject of my invention'is toinate'rielly simplify the construction and op-- eration of this class of adding-machines, whereby greater rapidity and accuracy are attained. Y

Referring to the -accompenying;' drawings fora more complete explanation of my in vention, Figure 1 is a front view of my machine; Fig, 2 is a vertical section of the plates C and D and a side eletation'of the key' portion. Fig, 3 is 'a front view'of a supplementaryplate O of a modified form of machine, a portion of said platefbeing broken away to show the hack plates. Fig.,4= is a section of the three 7 plates of said modified form. Y

A is the bed-plat havingrising from its q rear end a standard a, which carries in-itstop in supporting spindle or sha-ft B. i C is aplace, here shown in the'fcrm ot a disk and having atubular hub 0, whereby it is mounted and adapted to turn on the spire die 13. Upon the face of this plate are delineated the numbers, say, from 1 to 99 -inclu- -sive, with e'startingcipher or'point between increasedbyoniayif turnedtwice the distance,

" isiaseciondl e. a tubular huh,

is meet mzzssweeatee June 9,- 1891 f v res. irm i eaie If 'f;

screw-b in the end of the spindle Bholds both sight-apertu-rejd, through which'thenumbers on plate C may be seen,aud in this aperture, forv greater accuracy in reading, is an e pertnred pointer d which.;covers up ell but one umnber;

--'Aspr1ng E lies rhetiveeh thetiiogilates C i and D, an endz-being.con nected with each,

whereby it tnrns'thepletes in opposite directions; It will be well at thispoint jto'describe the useoffthese parts, so, that knowledgoof .the-principle'of operationotithe machine being gained, the subsequentdescription of con 'str'uctions will be better understood."

Facing the machine, the plate om sy tu rn to v the right and the plate 1) to the left. fNow if plate 0 heturned the minimum distance it will exhibit throughthesight-aperture a number it will show :a number increased by-two; it turned three times the distance, it on show a number increased by three, and it turned our limesithe distance it will show a number increasedby. four. fliiis is true considorin g the plate D as being at rest. Now consider plate 0 at rest, and that we turn the plate D in the direction opposite tothe direction in which. the plate-C turns, and thatit turns through a distance equal to five numbers. It is then evident that in the now changed yositionthe sight-aperture d it will exhibit enumoer through it,inreased byfive overthe n umber seen through it before it made its change. o have therefore provided for adding (1 iglts upto five. New as-theplates areindepcndent and can were simultaneously in opposite di rectiougweoa n add sir; by turning the plate -C its minimum distance of one and turning plate D its given distance of five, for the one is gained by the movement of plate C to the right and the five is had by the movement off plate I) to the'left'. So,als0, we'can add seven by turning plate C it distance of two and plate ,D its distance of live. Thus, also, we can add eight and nine, and it will be seen that these combinations of'the firstfourdigits withthe fzitli give all the digits, c'nd also that these combinations can be'eiiected as mpidlyes the singieelements.

The mechanism for ogieratiug the plates is 5 I and l turn upon thetubular-hnb c of plate .0. A small Rising from bed A is a standard w, to which is pivoted a pawl-carrier G, having a holdingpawl g at its upper end, which engages the teeth a of plate 0. A spring H holds the pawlcarrier in normal-position with its-pawl g to its engagement; The G passes directly over the levers of the keys 1,

i 2, 3, and4, and fitted to slide upon the end'of this arm by means of a guiding slot and pin is a catchpawl 9', having a controlling'spring g%, by which said pawl is kept normally retracted, so that its inner end lies just beyond the lever of key 1. Now when the. lever of said key is raised it comes up under and raises the lower arm of the pawl-carrier G, and so swings said carrier that the upper or holding pawl g is withdrawn from the teeth 0 of plate 0, and the lower or catch pawl is raised to engagement with said teeth and temporarily holds the plate, said pawl. being limited in its ,sliding movement by the side of the key-lever which lies in contact with the lower portion of the body of said pawl. -When the key is released, the spring ll returns the pawl-carrier, sothat its holding pawl returns to en-:

gagemengahd the catch-pawl is lowered and is returned by its spring. During this operation the spring E turns plate 0 the distance of 'one number. When key 2 is operated, the same operation takes place, but the plate 0 turns a distance of two numbers before. it is heldby pawl g, which has aggreater distance to slide before being limited by the lever of key 2.

Likewise with keys 3 and 4, the sliding catching-pawl allowingthe greatermovement of the plate before being limited by the lever of the key operated. To the standard a is also pivoted a pawl-carrier K, controlled by a spring I. In the upper end of this carrier is a holding-pawl k and at the lower end. catchpawl 7c. The former-is in normal engagement with the teeth (1 of plate 1). Under the lower end of pawl-carrienK the lever' of key 5 operates. Now open operating said key so as to raise the lever it swings the pawl-carrie'rto release pawl k and throws into engagement pawl 'k'. Then upon relieving the key the spring I returns the pawl, so that its holding-pawl returns to engagement. Du ring this operation the plate D turns under the power of spring E' one tooth, which,as before described, is a distance of five numers.

controlled ones, ofi common construction,

' catching the teethone way and allowing'th'em lower arm of pawl-carrier Both the pawls g and k are swinging springhe turned back to wind up the spring E and to reach any initial position.

The operation is as follows; Theplate-D is so turned that through its aperture the ci-- pliers are seen which mark the beginning. Given the following column to add:

-For the 6 lzcys 5 and 1 are pressed simultaneously, whereupon the plate 0 moves one number to the right and plate D moves five numbers to the .left, and through the sightaperture figure (5 is seen. Then press key 4, and plate 0, nioving'to the right, discloses figure 1Q. Then press key 5, and plate '1), moving to the left, brings its sight-aperture over'15. Then press simultaneously keys 5 and 2, and the plates moving oppositely discloses 24. Then press keys 5 and 3 together,

is seen theukey 1, and we see 42,and, finally, key-3, and is shown as the total. Thus with but two plates I amenabled to employ but five keys and to read in totals',instead of employing a separate plate for each key and having to subsequently add the numbers shown by all the plates' to reach thetotal.

disk and mounted frietionally on the end of hub c of plate 0, its use being to. pointto the ing the initial point.

I Now as it may be inconvenient to carry the numbers above 99 without having too big a plate, I have provided as follows for indicat' 'ing the hundreds: Upon the face of plate C, concentric and within the ring upon which and in this is made a spira groove on, beside each round of which are numbers representing the hundreds. Thus, beside one will be figures 1, beside another figures 2, and so on. In plate D, beside'the first sight-apertu re, is a second sight-aperture N, and in this lies a 'm. When 100 has been reached, the pointer enters the round of the groove beside which pointer, traveling in thespiral groove, reaches the round marked 2,'and' so on, its'springy character enabling it to'bend suflicientlv to followthe spiral course of the groove. 1

fore stated, in the oppositelyqnoving.plates, the onem'ov ng to varied distances and'ithe other to a iven d stance, whereby Iain enclose 22. Then press key 2, and plate 0 dis-- and 32 is disclosed; then keys 5 and 4, and 41' ciphers, showing where they are and indicatspring-pointer n, having a sharp under edge," which bears and travels in the spiral groovelrzs are the figures 1, and when 200 is reached the.

' The essence of my invention resting, as bee L is a small pointer secured to athu'mb- IlO the numbers are made, is a second ring M,

abledto int ioate the first five digits andniake use the-n ovcmients-ef the two plates-to indif.

cats these results otherwisaas .L'sha'llnow describe and illu'sti'ate byreference to Figs."

3 and 4.

Upon the aperture in plate I), though they ivill be otherwise the same as before describedand having the-same movements. 1

A P is an aperturcd sight-piece or indicator risingfrom and fixed to the bed A, and through which the numbers on plate O can be seen; A spring 0 behind-and connected with said plate tends constantly to turn it in one direction', say-to the left. Its escapementand movement are effected by means of a string .Q, which is wound several times about a flange 0" on its inner surface, and-thence said string passes under a slipbearing or roller q,

carried by plate D,'and is then wound several times abouts flange on plate Cinadirection opposite to the direction-in which it is wound on plate 0. Now when plate'Q moves to the right it unwinds andpays out the string, and plate 0, under the-power of its spring, moves to the left, taking up the slack of the string and being limited by'said string when taut,

thus effecting a movement equal to that of plate 0, and when plate 1) turns to the left it acts through its bearing-roller q to pull off a given amount of string from plate 0, thus allowing the plate 0 to again move to take up the slack, and its movement is equal to that of plate D. Thus the numbers pass behind afixed sightand can always be read in the same place.

Having thus described my invention, What Ielaiin as new, and desire to secure by Letters Patent, is+

1. In an adding-machine, movable. plates from the movement of whiclnthe indications are taken, said plates beingmovable in oppodirections; a spring for effecting their movements, controlling mechanisms for limiting the movement of one at difierent distances and of the other at a given distance, and keys for operating saidcontroll ing mech-' anisms, substantially as herein described.

2. In an adding-machine, the combination of movable plates from the movements of which the indications are taken, 5 id plates being movable in opposite directions, a set of separate keys and connections for effecting the movement of one of said plates to different distances, and a sin le key'for effecting the movement of the other plate to agiven distance, substantially as herein described.

' In an adding-machine,plates movablein opposite directions, the movement of one of ions-with the fifth of-the other to a given forward end of spindle 13,1 mount a pLtte'Q'around the face'of which I make the numbers, ass'nowm In this case there- -will be no numbers on plate (land no sightsaid plates being to noes and that di -e, a series of, numbers carried by one of said plates, and a sightoarriedl by the other, substantially as herein described. A

4: In an adding-machine, superposed plates movable in opposite d irections, the movementoflone of said plates being to varied distances and that of the other to a-given distance,'the

.unde'r plate carrying aseries of munbersandr the upper; plate insight-aperture over said numbers, substantially as hereindescribed.

' 5. In -an adding-machine, the combination of plates movable in opposite directions, one of said plates carrying aseries' of. numbers and the ,other. an indicating-sight, .a set of separate keys and connections for etfecting the movement of one of said plates to (lilies entvdistances, and a single key for elfeeting the. movementof the other plate to a givcn distance, substantially as hereindescribed.

' i 6. In an adding-machine, the oppositelymovable plates from the movement of which the indications are taken, the single spring between them for effecting their movements, controlling mcchanismsfor limiting the movement of one at different distances and of the other at a givendistnnceand keys for operating said controlling mechanisms, substan tially as herein described.

7. In an 'adding-inachinc, the combination of the rotatory spring-act uated plate U, having teeth upon its rim, the separate keys and keylevers, the pivoted spring-controlled pawL carrier operated-by thejlcey-levcis, the holding-p wl thereof, and the sliding spring-controlle catch-pawl on said carrier, adapted to be limited at ditiorent distances bycontect with the key-levers, whereby the plate movesto and is caught at different distances, substantially as herein described.

8. In anaddingmaohine, the combination of the rotatory spring-actuated plates 6 and D, movable in opposite directions and having teeth upon their rims, the pivoted springcontrolled pawlca ricr having the holdingpa vl engaging the teeth of plate C, and the sliding spring-controlled. calchpawl engaging said teeth and limited at dif'icrent distances, the keys and key-levers for oncratinf, said pawl-carrier and lii'niting tho sliding pawl, the second pivoted spring controlled pawl-carrier having is. holding-pawl and a catclrpawl for controlling plate D,,nnd the key and key-lever for operating saidsecond pawl-carrier, substantially as herein described. 9. In an adding-machine, the combination of the oppositely-rotating plates C and D, the former having the series of numbetsand the latter a sight-aperture, the spiral groove on the face of plate 0, and the second sightaperture in plate Dgvith springpointcr lntvmg an edge traveling in the spiral groove of plate C, substantially as herein described.

10. In an zulding-machinc, lhccombiuatinn EIO ILIU

. 1o set'of keys and connections for effecting the oi the oppositely-rotating plates 0 and D, the rotating front; plate '0, carrying numbers, a 'fixed sight-indieator-for said plate, and a con neetion 'wh'ereby the opposite movements of- 5 plates" end D are transmitted to rotate plete'O -iii'asingle direction, substantially as hereindescribed.

111. In an adding-machine, the combination iiffftli'eoiilinsibeiy-rotgting plates G andD a movement of plate C to different distances, and a single key for'effecting the moi/fitment of plate D to a given distance, a front plate. 0, earrying numbers,.a'fixed sight-indicator I mitted. to rotate the latter in a single Ail-cv- 'tiou, substantially'as herein described.

12; In an adding-machine, the combination 20 of the oppositely-rotating plates 0 and ID the spring-actuated rotating front plate 0, carrying numbers, a fixed sight-indicator for wi l plate, and the string wound about plates 0 and O in opposite directions and connected 2 5 with plate Dlly aslip-bearing, such as the roller q, substantially as herein described.

In witness whereof I have hereunto set my hand.

ARTi-IUR E. SIIATTUUH.

Witnesses:

15 for said piat, and. a connection betweenplates C and D and plate 0, whereby the epposite-nmvements of the former are trans- S. II. Nounsn, II. C. LEE. 

